package com.labofjet.blogv3.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Component;

@Component
public class ManageFilter implements Filter {

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		// TODO Auto-generated method stub

	}

	// 未登录就不允许访问
	@Override
	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse res = (HttpServletResponse) response;
		Cookie[] cookies = req.getCookies();
		for (Cookie cookie : cookies) {
			if (cookie.getName().equals("userName")
					&& cookie.getValue() != null) {
				chain.doFilter(request, response);
				return;
			}
		}
		res.sendRedirect(req.getContextPath() + "/home");
	}

	@Override
	public void destroy() {
		// TODO Auto-generated method stub

	}

}
